Astronomy:NGC 2491
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| NGC 2491 | |
|---|---|
 Sloan Digital Sky Survey of NGC 2491 | |
| Observation data (J2000 epoch) | |
| Constellation | Canis Minor |
| Right ascension | 07h 58m 27.37s |
| Declination | +07d 59m 01.74s |
| Redshift | 0.039290 |
| Helio radial velocity | 18,476 km/s |
| Distance | 583 Mly (178.74 Mpc) |
| Apparent magnitude (V) | 14.8 |
| Apparent magnitude (B) | 15.6 |
| Characteristics | |
| Type | S |
| Size | 130,000 ly |
| Apparent size (V) | 0.3' x 0.2' |
| Other designations | |
| PGC 22353, 2MASX J07582739+0759018, SDSS J075827.37+075901.7, CGCG 031-007, 2MASS J07582738+0759019, NPM1G+08.0123, LEDA 22353 | |
NGC 2491 is a spiral galaxy located in Canis Minor constellation.[1] It is located 580 million light-years from Earth and has an approximate diameter of 130,000 light-years.[2]
Details
NGC 2491 was discovered by American astronomer Lewis Swift on November 15, 1885.[3] Swift described it as extremely faint, small, with a round irregular shape, and a bright star to the west.[3] With a surface brightness of magnitude of 11.75, NGC 2491 is classified as a high surface brightness galaxy.[4]
References
- ↑ "Revised NGC Data for NGC 2491". https://spider.seds.org/ngc/revngcic.cgi?NGC2491.
- ↑ "Your NED Search Results". https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=16439&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1.
- ↑ 3.0 3.1 "New General Catalog Objects: NGC 2450 - 2499". https://cseligman.com/text/atlas/ngc24a.htm#2491.
- ↑ "Data from NGC and IC catalogue by Wolfgang Steinickle from NGC 2400-2499". http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N2400_exc_web.htm.
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